Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dap luat du snippets" » "phap luat du snippets", "dan luan du snippets", "dat luan du snippets", "dap luat dau snippets", "dap luat su snippets", "dap luat tu snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dap luat du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dap luat du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dap luat du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dap luat du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.